Effect of Amelioration and K Fertilization on Potassium Q-I Relationship Parameters on Acid Mineral Soil

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dc.contributoren-US
dc.creatorSUBIKSA, I GUSTI MADE
dc.creatorADININGSIH, J SRI
dc.creatorSUDARSONO, .
dc.creatorSUBIHAM, SUPANDI
dc.date2012-12-18
dc.date.accessioned2018-06-04T06:35:10Z
dc.date.available2018-06-04T06:35:10Z
dc.date.issued2012-12-18
dc.descriptionRelationship between cations adsorbed in solid phase (Qfactor) and those in soil solution (I-factor) can be expressed by quantity-intensity (Q-I) relationship curve of K that was introduced by Beckett. A laboratory experiment to study the effect of amelioration and K fertilization on K Q-I parameters was carried out on three soil families of acid upland mineral soil from Cigudeg, Kentrong, and Papanrejo. The experiment was arranged using completely randomized design with 2 factors. The first factor was three kinds of ameliorant and the second factor was three levels of K fertilization. The result suggested that amelioration with dolomite and steel slag increased K buffering capacity (PBCK) due to the increase in cation exchange capacity (CEC) and Ca and Mg concentration of the soil solution.Conversely, amelioration decreased equilibrium activity ratio of K (ARKe) due to alteration of K-Ca–Mg equilibrium. Amelioration, however, did not affect labile-K, except for Cigudeg soil. The application of K fertilizer increased K availability in terms of ARKe and labile-K. Those three soil families performed different changes in K availability effect, where soil with higher CEC showed smaller change than the lower one, also tended todecrease K buffering capasity (PBCK). The implication of this study is amelioration practice must be followed by K fertilization in order to avoid plant deficiency in K nutrient.en-US
dc.formatapplication/pdf
dc.identifierhttp://ejurnal.litbang.pertanian.go.id/index.php/jti/article/view/294
dc.identifier10.2017/jti.v0i22.294
dc.identifier.urihttps://repository.pertanian.go.id/handle/123456789/2402
dc.languageeng
dc.publisherBalai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanianen-US
dc.relationhttp://ejurnal.litbang.pertanian.go.id/index.php/jti/article/view/294/183
dc.source1410-7244
dc.sourceJurnal Tanah dan Iklim; No 22 (2004): Desember 2004en-US
dc.sourceJurnal Tanah dan Iklim (Indonesian Soil and Climate Journal); No 22 (2004): Desember 2004id-ID
dc.titleEffect of Amelioration and K Fertilization on Potassium Q-I Relationship Parameters on Acid Mineral Soilen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
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